Seasonal energy storage (charge in summer and use in winter) with lithium is not feasible. If the medium would be cheap and could be pumped into arbitrarily la

Seasonal energy storage (charge in summer and use in winter) with lithium is not feasible. If the medium would be cheap and could be pumped into arbitrarily large tanks that don’t need constant energy input to hold the charge then this could be an enabler for seasonal storage. I don’t know whether either of them are true for flow battery (yet). They are certainly not true for H2. H2 also has atrocious round trip efficiency, not sure about flow either.